Just today, I got over a thousand spam messages all labeled as {spam?0} and the From does not have anything shown. In the expanded headers there is info, all of them vary.
Is there a bug here!? What else can I do to filter these out?
I thought about the filter from cpanel but there is no option to select "regex does not match", so can I use "regex matches" then use "!\w+" for the "From" field?
We haven't come across this before. Can you post an example or two of these spam emails, including all the headers (including the MailScanner headers)?